underground
Definition
Beneath the surface of the earth; also refers to something hidden or secret.
한국어 지면 아래; 또한 비밀스럽거나 은밀한 것을 의미한다
Example
"The subway system runs through a network of underground tunnels."
Beneath the surface of the earth; also refers to something hidden or secret.
한국어 지면 아래; 또한 비밀스럽거나 은밀한 것을 의미한다
"The subway system runs through a network of underground tunnels."